Higher-order nonlinearities revisited and their effect on harmonic generation.

Phys Rev Lett 2015 Mar 2;114(9):093901. Epub 2015 Mar 2.

Department of Physics, Applied Physics and Astronomy, Binghamton University, State University of New York, Binghamton, New York 13902, USA.

We report on harmonic generation experiments and calculations in air to investigate the theoretical prediction of Kolesik et al. [Opt. Lett. 35, 2550 (2010)] for testing the recently proposed higher-order Kerr effect model. Our observations show that although the fifth-order nonlinearity is non-negligible, the overall defocusing effect via the higher-order nonlinearities is sufficiently small that plasma formation should be a main defocusing mechanism in high power filamentation. We also explore cross-phase modulation via the optical Kerr effect, and find that the higher-order nonlinearities can significantly alter the phase matching of harmonic generation.

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevLett.114.093901DOI Listing
March 2015
19 Reads

Publication Analysis

Top Keywords

harmonic generation
12
higher-order nonlinearities
12
non-negligible defocusing
4
nonlinearity non-negligible
4
defocusing higher-order
4
small plasma
4
formation main
4
plasma formation
4
fifth-order nonlinearity
4
nonlinearities small
4
higher-order
4
testing proposed
4
2010] testing
4
proposed higher-order
4
higher-order kerr
4
main defocusing
4
kerr model
4
observations fifth-order
4
mechanism high
4
find higher-order
4

References

(Supplied by CrossRef)

Y. R. Shen et al.
1984

Similar Publications